What is the ruling on masturbation, and why has the questioner not experienced a wet dream despite having reached puberty, and does this entail making up missed prayers?

Masturbation (self-abuse) is forbidden by the Qur’an and Sunnah, and it has serious physical harms. One must hasten to repent and desist from it. As for delayed nocturnal emission, there is no reason to be keen on it. It is usually a manipulation by Satan of the sleeping person. It is advised to consult the counseling section to learn more medically.